Medical Conditions – Page 6 – NatWonk – Dr Bier’s Research Reviews

Cardiac Troponins and Cardiovascular Disease Risk Prediction: An Individual-Participant-Data Meta-Analysis

November 26, 2025

📝Comment: This meta-analysis represents the highest level of evidence for a prognostic biomarker, using Individual-Participant-Data (IPD) analysis across 15 high-quality prospective cohorts. While the absolute increase in risk prediction (C-index) is modest, high-sensitivity troponins are an independent prognostic factor for cardiovascular disease that provide greater predictive gains than traditional inflammatory markers like C-reactive protein (CRP), […]

High-Sensitivity Cardiac Troponin I for Risk Stratification in Older Adults

November 26, 2025

| No Comments

| Cardiovascular Health

Comment: Although we are all used to seeing troponin used to rule in or out a heart attack, this study shows it can be used for prognostic chronic risk stratification. It shows there is a population of older, asymptomatic people who, despite having no history of MI or overt CVD, are walking around with a […]

A Randomized Clinical Trial Evaluating Vitamin D Normalization on Major Adverse Cardiovascular-Related Events Among Acute Coronary Syndrome Patients: The TARGET-D Trial – Conference Abstract Only

November 22, 2025

| No Comments

| Cardiovascular Health

Comment: I don’t usually review abstracts, but I think this is interesting enough that it’s worth posting at the very least to mark the dosing strategy, which finally mimics what we do clinically. The most compelling takeaway from the TARGET-D trial isn’t just the reduction in recurrent Myocardial Infarction (MI), but how they achieved it: through […]

Hormonal Contraceptive Formulations and Breast Cancer Risk in Adolescents and Premenopausal Women

November 21, 2025

| No Comments

| Cancer

Comment: This massive Swedish cohort study serves as a critical update for anyone managing contraception. While the absolute risk remains low—approximately 1 extra case per 7,752 users per year—the relative increase in breast cancer risk is substantial, driven largely by specific hormonal components. The overall Hazard Ratio of 1.24 suggests a 24% increase in relative […]

Higher vitamin B12 from mid- to late life is related to slower rates of cognitive decline

November 17, 2025

| No Comments

| Neurological & Cognitive Health

Comment: It’s not like using B12 is a shocking new concept – it’s commonly used for brain and memory issues. This study adds that measuring serum B12 alone isn’t sufficient. The protective association was driven by the composite score, not standard cobalamin levels. To truly ensure our patients are utilizing B12 for neuroprotection, we must […]

Evidence for the Benefits of Melatonin in Cardiovascular Disease

November 15, 2025

| No Comments

| Cardiovascular Health

Comment: The evidence summarized here makes a powerful case for melatonin as a therapeutic agent in cardiovascular health, a potent, naturally occurring neuroendocrine hormone with impressive antioxidant and anti-inflammatory properties. What stands out most is the breadth of its potential benefits: from protecting the heart muscle during a heart attack (I/R injury) to suppressing damage […]

Melatonin as a Novel Drug to Improve Cardiac Function and Quality of Life in Heart Failure Patients: A Systematic Review and Meta-Analysis

November 15, 2025

| No Comments

| Cardiovascular Health

Comment: This meta-analysis offers a compelling signal for melatonin’s role in palliative care for Heart Failure (HF). The statistically significant and moderate-certainty finding that melatonin improves Quality of Life (QoL) is highly relevant for patients struggling with chronic symptoms. The observed reduction in fatigue and improvement in sleep quality strongly supports this benefit. However, the […]

Effect of melatonin on nocturnal blood pressure: meta-analysis of randomized controlled trials

November 14, 2025

| No Comments

| Cardiovascular Health

Comment: This is an important one for several reasons. Nocturnal hypertension is more closely associated with adverse cardiovascular outcomes and mortality than daytime hypertension, with nighttime systolic blood pressure being a stronger predictor of risk even after adjusting for daytime values. The reduction levels seen with controlled release melatonin may look minimal, but are actually […]

Liothyronine and Desiccated Thyroid Extract in the Treatment of Hypothyroidism

November 10, 2025

| No Comments

| Endocrine Health

Comment: The summary of this review is striking for the apparent disconnect it highlights regarding Desiccated Thyroid Extract (DTE). The authors accurately report that official guidelines universally reject DTE based on theoretical concerns—namely, the lack of FDA oversight and the transient, non-physiological T3 spikes. Yet the clinical data they reviewed tells an entirely different story: […]

Effect of Long-term Melatonin Supplementation on Incidence of Heart Failure in Patients with Insomnia: Abstract 4371606

November 7, 2025

| No Comments

| Cardiovascular Health

Comment: This is a classic “real-world evidence” abstract that generates a frightening headline—a 90% increased risk of heart failure!—but whose findings are likely the result of a fatal flaw: confounding by indication. It’s impossible to fully judge a study from a conference abstract alone, as the methodology is never described in sufficient detail so we’ll […]